CTCS-3级列控车载设备按CTCS-2级控车时待机、部分监控、完全监控模式分别可以进入哪些模式
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CTCS3级及CTCS2级列控系统基于什么原理控制列车运行
Ageneralledger（）
A. contains only asset and liability accounts.
B. should show accounts in alphabetical order.
C. is a collection of the entire group of accounts maintained by an entity.
D. provides a chronological record of transactions
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